Techniques for indicating skipping a discontinuous receive active duration in wireless communications

Abstract

Aspects described herein relate to receiving, during a discontinuous receive (DRX) active time, a go to sleep (GTS) signal in a group-based downlink control information (DCI) indicating to enter a sleep mode at the UE, and entering, based on receiving the GTS signal, the sleep mode during at least a period of a remaining portion of the DRX active time. Other aspects relate to transmitting the GTS signal.

What is claimed is: 
     
         1 . An apparatus for wireless communication, comprising:
 a processor;   memory coupled with the processor; and   instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:
 receive, during a discontinuous receive (DRX) active time, a go to sleep (GTS) signal in a group-based downlink control information (DCI) indicating to enter a sleep mode at the apparatus; and 
 enter, based on receiving the GTS signal, the sleep mode during at least a period of a remaining portion of the DRX active time. 
   
     
     
         2 . The apparatus of  claim 1 , wherein the instructions, when executed by the processor, cause the apparatus to receive, before the DRX active time, a wake-up signal in a previous group-based DCI indicating to exit the sleep mode at the apparatus for the DRX active time. 
     
     
         3 . The apparatus of  claim 2 , wherein the group-based DCI and the previous group-based DCI have a same time and frequency resource allocation within respective time periods. 
     
     
         4 . The apparatus of  claim 2 , wherein the group-based DCI and the previous group-based DCI have a same aggregation level. 
     
     
         5 . The apparatus of  claim 2 , wherein the group-based DCI and the previous group-based DCI are in a same search space set and are scrambled with a same radio network temporary identifier (RNTI). 
     
     
         6 . The apparatus of  claim 2 , wherein the instructions, when executed by the processor, cause the apparatus to derive at least one of a search space for the group-based DCI or a radio network temporary identifier (RNTI) for the group-based DCI based on at least one of a previous search space for the previous group-based DCI or a previous RNTI for the previous group-based DCI. 
     
     
         7 . The apparatus of  claim 2 , wherein the GTS signal is of a same format as the wake-up signal and includes an indicator that the GTS signal is for indicating to enter the sleep mode. 
     
     
         8 . The apparatus of  claim 2 , wherein the wake-up signal indicates a time and frequency resource allocation for the GTS signal, and wherein the instructions, when executed by the processor, cause the apparatus to receive the GTS signal based on the time and frequency resource allocation. 
     
     
         9 . The apparatus of  claim 2 , wherein the wake-up signal indicates a minimum time offset between the wake-up signal and the GTS signal. 
     
     
         10 . The apparatus of  claim 2 , wherein the instructions, when executed by the processor, cause the apparatus to receive a configuration indicating a minimum time offset between the wake-up signal and the GTS signal. 
     
     
         11 . The apparatus of  claim 2 , wherein the wake-up signal indicates one or more configuration parameters for the group-based DCI, wherein the one or more configuration parameters include one or more of a search space, a time and frequency resource location, a radio network temporary identifier, a payload size, or a time offset for monitoring the group-based DCI. 
     
     
         12 . The apparatus of  claim 1 , wherein the instructions, when executed by the processor, cause the apparatus to receive a configuration that indicates one or more configuration parameters for the group-based DCI, wherein the one or more configuration parameters include one or more of a search space, a time and frequency resource location, a radio network temporary identifier, a payload size, or a time offset for monitoring the group-based DCI. 
     
     
         13 . The apparatus of  claim 12 , wherein the instructions, when executed by the processor, cause the apparatus to receive the configuration in one or more of radio resource control (RRC) signaling, a media access control-control element (MAC-CE), a different DCI or layer 1 (L1) indication. 
     
     
         14 . The apparatus of  claim 1 , wherein the instructions, when executed by the processor, cause the apparatus to receive a configuration indicating which bits of the group-based DCI correspond to the GTS signal for the apparatus. 
     
     
         15 . The apparatus of  claim 14 , wherein the configuration indicates the bits for one or more of a time offset, a time and frequency resource allocation, control resource set (CORESET) information, or an aggregation level for the GTS signal. 
     
     
         16 . The apparatus of  claim 14 , wherein the configuration includes a first branch indicating which bits of the group-based DCI correspond to the GTS signal for the apparatus, and a second branch indicating which bits of a second group-based DCI received outside of the DRX active time correspond to a wake-up signal for the apparatus. 
     
     
         17 . An apparatus for wireless communication, comprising:
 a processor;   memory coupled with the processor; and   instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:
 configure a user equipment (UE) to communicate in a discontinuous receive (DRX) active time; and 
 transmit, during the DRX active time, a go to sleep (GTS) signal in a group-based downlink control information (DCI) indicating to enter a sleep mode at the UE. 
   
     
     
         18 . The apparatus of  claim 17 , wherein the instructions, when executed by the processor, cause the apparatus to transmit, before the DRX active time, a wake-up signal in a previous group-based DCI indicating to exit the sleep mode at the UE for the DRX active time. 
     
     
         19 . The apparatus of  claim 18 , wherein the DCI and the previous DCI at least one of have a same time and frequency resource allocation within respective time periods, have a same aggregation level, or are in a same search space set and are scrambled with a same radio network temporary identifier (RNTI). 
     
     
         20 . The apparatus of  claim 18 , wherein the GTS signal is of a same format as the wake-up signal and includes an indicator that the GTS signal is for indicating to enter the sleep mode. 
     
     
         21 . The apparatus of  claim 18 , wherein the wake-up signal indicates at least one of a time and frequency resource allocation for the GTS signal, or a minimum time offset between the wake-up signal and the GTS signal. 
     
     
         22 . The apparatus of  claim 18 , wherein the instructions, when executed by the processor, cause the apparatus to transmit a configuration indicating a minimum time offset between the wake-up signal and the GTS signal. 
     
     
         23 . The apparatus of  claim 18 , wherein the wake-up signal indicates one or more configuration parameters for the DCI, wherein the one or more configuration parameters include one or more of a search space, a time and frequency resource location, a radio network temporary identifier, a payload size, or a time offset for monitoring the DCI. 
     
     
         24 . The apparatus of  claim 17 , wherein the instructions, when executed by the processor, cause the apparatus to transmit a configuration that indicates one or more configuration parameters for the DCI, wherein the one or more configuration parameters include one or more of a search space, a time and frequency resource location, a radio network temporary identifier, a payload size, or a time offset for monitoring the DCI, and wherein transmitting the configuration is in one or more of radio resource control (RRC) signaling, a media access control-control element (MAC-CE), a different DCI or layer 1 (L1) indication. 
     
     
         25 . The apparatus of  claim 17 , wherein the instructions, when executed by the processor, cause the apparatus to transmit a configuration indicating which bits of the group-based DCI correspond to the GTS signal for the UE. 
     
     
         26 . The apparatus of  claim 25 , wherein the configuration at least one of indicates the bits for one or more of a time offset, a time and frequency resource allocation, control resource set (CORESET) information, or an aggregation level for the GTS signal. 
     
     
         27 . The apparatus of  claim 25 , wherein the configuration includes a first branch indicating which bits of the group-based DCI correspond to the GTS signal for the UE, and a second branch indicating which bits of a second group-based DCI transmitted outside of the DRX active time correspond to a wake-up signal for the UE. 
     
     
         28 . A method for wireless communication at a user equipment (UE), comprising:
 receiving, during a discontinuous receive (DRX) active time, a go to sleep (GTS) signal in a group-based downlink control information (DCI) indicating to enter a sleep mode at the UE; and   entering, based on receiving the GTS signal, the sleep mode during at least a period of a remaining portion of the DRX active time.   
     
     
         29 . The method of  claim 28 , further comprising receiving, before the DRX active time, a wake-up signal in a previous group-based DCI indicating to exit the sleep mode at the UE for the DRX active time. 
     
     
         30 . A method for wireless communication at a network node, comprising:
 configuring a user equipment (UE) to communicate in a discontinuous receive (DRX) active time; and   transmitting, during the DRX active time, a go to sleep (GTS) signal in a group-based downlink control information (DCI) indicating to enter a sleep mode at the UE.